Feancis



P. o. BROWN 85A.' M. SUTHZERLAND. Stylographic Io'utain Pen. A

No. 238,024.4 APmmed Feb. 22,1881* `lllllllllllllllllll1/yq0000 NJTERS.PHDTO-UTHDGRAPNER, WASHINGTON. n. c.

UNITED STATES PATENT OFFICE'.

FRANCIS O. BROWN AND ALEXANDER M. SUTHERLAND, OF NEW YORK, N. Y.

STYLOGRAPHIC FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 238,024, dated February22, 1881.

Application led October 10, 1879.

To all whom it may concern Beit known that we, FRANCIS C. BRowN andALEXANDER M. SUTHEELAND, both citizens of Canada, now residing in thecity and county of New York, and State of New York, have inventedcertain new and uset'ullmprovements in Fountain-Pens; and we do herebydeclare the following to be a full, clear, and eX- act description ot'the invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters ot' reference marked thereon,which form a part of this specification.

This invention relates to certain improvements in stylographicfountain-pens; and the said invention consists in constructing orproviding a spring between the end of the airtube and top of the valve,said spring being secured in a cavity formed in the top portion of thevalve-block, whereby an elastic positive action is at all times given tothe valve, substantially as and for the purposes hereinafter more fullyset forth and claimed.

In the drawings, Figure l is a central longitudinal sectional view ot apen provided with a valve constructed with spring in its top; Fig. 2, anenlarged view ot' the valve; Fig. 3, a modification.

a a is the pen case or barrel, and b the airtube, of the usual or anyappropriate construction.

is the valve block or or spindle c at its lower end. Through the centerof the valve-block is drilled a hole or opening, c2, which receives atits lower end the spindle or needle-adjusting screw o', and at the top aspiral spring, d, is inserted. Said spring is made of a size, inrelation to the bore carrier, with needle .02, that when the spring isplaced in position in the valve-block the coils of the spring will titbetween the threads of the screw cut on the inside ot' the bore c2, asshown. The spring is insertedfin place by screwing it within thevalve-block, and it is adjusted in position therein so as when the partsare in position the spring will have apositive but slight pressure uponthe end of the airtube. By this means an elastic positive action isgiven to the valve, and the pen is kept closed, even should it beinverted. Thus the accidental escape of ink is at all times prevented.

Instead of having the springimpinge against the end ot the air-tube, itmay be made to impinge against a iiXed part or stop formed in theinterior of the peil-barrel, as shown in the modification. Also,thespring maybe secured in position in the valve-block in any suitable orappropriate manner, no special claim being laid to this detail ofconstruction.

The needle or spindle c is, in this instance, made swivel; but it may beeither swivel or rigid, as desired, no claim being made to thisparticular feature by us.

The air-tube is falso made in two sections, united by a slip 0r screwjoint, as shown in Fig. 1, whereby the relative distance between thevalve and the air-tube ina-y be adjusted and regulated. No claim,however, is made by us to this twopart air-tube, in itself, in thiscase.

Having thus described the invention, what we claim as new, and desire tosecure by Letters Patent, is-

l. In a stylographic fountainpen, the valve c c', provided within itstop end with spring d, adapted to be adjusted therein and removedtherefrom, substantially as and for the purposes described.

2. The combination and arrangement, in a fountain-pen, ot' air-tubeterminating near the valve, valve with spring, and adjustable needle,substantially as and for the purposes described.

3. The combination, in a fountain-pen, ofthe valve, the spring securedwithin the top of the valve, and adjustable needle, substantially as andfor the purposes described.

In testimony that weclaim the foregoing we have hereunto set our handsthis 9th day of October, 1879.

F. C. BROWN. A. M. SUTHERLAND. Witnesses:

B. S. CLARK,

H. VAN ALLEN.

